<!--
 * @Descripttion: 过滤器V2
 * @version: 2.5
 * @Author: sakuya
 * @Date: 2021年7月30日14:48:41
 * @LastEditors: Xujianchen
 * @LastEditTime: 2023-03-17 10:57:22
-->

<template>
	<div class="sc-filterBar">
		<slot :filterLength="filterObjLength" :openFilter="openFilter">
			<el-badge :value="filterObjLength" type="danger" :hidden="filterObjLength <= 0">
				<el-button icon="el-icon-filter" @click="openFilter"></el-button>
			</el-badge>
		</slot>

		<el-drawer v-model="drawer" title="过滤器" :size="650" append-to-body>
			<el-container v-loading="saveLoading">
				<el-main style="padding: 0">
					<el-tabs class="root">
						<el-tab-pane lazy>
							<template #label>
								<div class="tabs-label">过滤项</div>
							</template>
							<el-scrollbar>
								<div class="sc-filter-main">
									<h2>设置过滤条件</h2>
									<div v-if="filter.length <= 0" class="nodata">没有默认过滤条件，请点击增加过滤项</div>
									<table v-else>
										<colgroup>
											<col width="50" />
											<col width="140" />
											<col v-if="showOperator" width="120" />
											<col />
											<col width="40" />
										</colgroup>
										<tr v-for="(item, index) in filter" :key="index">
											<td>
												<el-tag>{{ index + 1 }}</el-tag>
											</td>
											<td>
												<py-select
													v-model="item.field"
													:options="fields"
													placeholder="过滤字段"
													filterable
													@change="fieldChange(item)"
												>
												</py-select>
											</td>
											<td v-if="showOperator">
												<el-select v-model="item.operator" placeholder="运算符">
													<el-option
														v-for="ope in item.field.operators || operator"
														:key="ope.value"
														:label="ope.label"
														:value="ope.value"
													></el-option>
												</el-select>
											</td>
											<td>
												<el-input
													v-if="!item.field.type"
													v-model="item.value"
													placeholder="请选择过滤字段"
													disabled
												></el-input>
												<!-- 输入框 -->
												<el-input
													v-if="item.field.type === 'text'"
													v-model="item.value"
													:placeholder="item.field.placeholder || '请输入'"
												></el-input>
												<!-- 下拉框 -->
												<el-select
													v-if="item.field.type === 'select'"
													v-model="item.value"
													:placeholder="item.field.placeholder || '请选择'"
													filterable
													:multiple="item.field.extend.multiple"
													:loading="item.selectLoading"
													:remote="item.field.extend.remote"
													:remote-method="
														(query) => {
															remoteMethod(query, item)
														}
													"
													@visible-change="visibleChange($event, item)"
												>
													<el-option
														v-for="field in item.field.extend.data"
														:key="field.value"
														:label="field.label"
														:value="field.value"
													></el-option>
												</el-select>
												<!-- 日期 -->
												<el-date-picker
													v-if="item.field.type === 'date'"
													v-model="item.value"
													type="date"
													value-format="YYYY-MM-DD"
													:placeholder="item.field.placeholder || '请选择日期'"
													style="width: 100%"
												></el-date-picker>
												<!-- 日期范围 -->
												<el-date-picker
													v-if="item.field.type === 'daterange'"
													v-model="item.value"
													type="daterange"
													value-format="YYYY-MM-DD"
													start-placeholder="开始日期"
													end-placeholder="结束日期"
													style="width: 100%"
												></el-date-picker>
												<!-- 日期时间 -->
												<el-date-picker
													v-if="item.field.type === 'datetime'"
													v-model="item.value"
													type="datetime"
													value-format="YYYY-MM-DD HH:mm:ss"
													:placeholder="item.field.placeholder || '请选择日期'"
													style="width: 100%"
												></el-date-picker>
												<!-- 日期时间范围 -->
												<el-date-picker
													v-if="item.field.type === 'datetimerange'"
													v-model="item.value"
													type="datetimerange"
													value-format="YYYY-MM-DD HH:mm:ss"
													start-placeholder="开始日期"
													end-placeholder="结束日期"
													style="width: 100%"
												></el-date-picker>
												<!-- 开关 -->
												<el-switch
													v-if="item.field.type === 'switch'"
													v-model="item.value"
													active-value="1"
													inactive-value="0"
												></el-switch>
												<!-- 标签 -->
												<el-select
													v-if="item.field.type === 'tags'"
													v-model="item.value"
													multiple
													filterable
													allow-create
													default-first-option
													no-data-text="输入关键词后按回车确认"
													:placeholder="item.field.placeholder || '请输入'"
												></el-select>
											</td>
											<td>
												<el-icon class="del" @click="delFilter(index)"><el-icon-delete /></el-icon>
											</td>
										</tr>
									</table>
									<el-button type="primary" text icon="el-icon-plus" @click="addFilter">增加过滤项</el-button>
								</div>
							</el-scrollbar>
						</el-tab-pane>
						<el-tab-pane lazy>
							<template #label>
								<div class="tabs-label">常用</div>
							</template>
							<el-scrollbar>
								<my ref="my" :data="myFilter" :filterName="filterName" @selectMyfilter="selectMyfilter"></my>
							</el-scrollbar>
						</el-tab-pane>
					</el-tabs>
				</el-main>
				<el-footer>
					<el-button type="primary" :disabled="filter.length <= 0" @click="ok">立即过滤</el-button>
					<el-button type="primary" plain :disabled="filter.length <= 0" @click="saveMy">另存为常用</el-button>
					<el-button @click="clear">清空过滤</el-button>
				</el-footer>
			</el-container>
		</el-drawer>
	</div>
</template>

<script>
import config from '@/config/filterBar'
import pySelect from './pySelect'
import my from './my'

export default {
	name: 'filterBar',
	components: {
		pySelect,
		my
	},
	props: {
		filterName: { type: String, default: '' },
		showOperator: { type: Boolean, default: true },
		options: { type: Object, default: () => {} }
	},
	data() {
		return {
			drawer: false,
			operator: config.operator,
			fields: this.options,
			filter: [],
			myFilter: [],
			filterObjLength: 0,
			saveLoading: false
		}
	},
	computed: {
		filterObj() {
			const obj = {}
			this.filter.forEach((item) => {
				obj[item.field.value] = this.showOperator ? `${item.value}${config.separator}${item.operator}` : `${item.value}`
			})
			return obj
		}
	},
	mounted() {
		//默认显示的过滤项
		this.fields.forEach((item) => {
			if (item.selected) {
				this.filter.push({
					field: item,
					operator: item.operator || 'include',
					value: ''
				})
			}
		})
	},
	methods: {
		//打开过滤器
		openFilter() {
			this.drawer = true
		},
		//增加过滤项
		addFilter() {
			if (this.fields.length <= 0) {
				this.$message.warning('无过滤项')
				return false
			}
			const filterNum = this.fields[this.filter.length] || this.fields[0]
			this.filter.push({
				field: filterNum,
				operator: filterNum.operator || 'include',
				value: ''
			})
		},
		//删除过滤项
		delFilter(index) {
			this.filter.splice(index, 1)
		},
		//过滤项字段变更事件
		fieldChange(tr) {
			let oldType = tr.field.type
			tr.field.type = ''
			this.$nextTick(() => {
				tr.field.type = oldType
			})
			tr.operator = tr.field.operator || 'include'
			tr.value = ''
		},
		//下拉框显示事件处理异步
		async visibleChange(isopen, item) {
			if (isopen && item.field.extend.request && !item.field.extend.remote) {
				item.selectLoading = true
				try {
					var data = await item.field.extend.request()
				} catch (error) {
					console.log(error)
				}
				item.field.extend.data = data
				item.selectLoading = false
			}
		},
		//下拉框显示事件处理异步搜索
		async remoteMethod(query, item) {
			if (query !== '') {
				item.selectLoading = true
				try {
					var data = await item.field.extend.request(query)
				} catch (error) {
					console.log(error)
				}
				item.field.extend.data = data
				item.selectLoading = false
			} else {
				item.field.extend.data = []
			}
		},
		//选择常用过滤
		selectMyfilter(item) {
			//常用过滤回显当前过滤项
			this.filter = []
			this.fields.forEach((field) => {
				var filterValue = item.filterObj[field.value]
				if (filterValue) {
					var operator = filterValue.split('|')[1]
					var value = filterValue.split('|')[0]
					if (field.type === 'select' && field.extend.multiple) {
						value = value.split(',')
					} else if (field.type === 'daterange') {
						value = value.split(',')
					}
					this.filter.push({
						field: field,
						operator: operator,
						value: value
					})
				}
			})
			this.filterObjLength = Object.keys(item.filterObj).length
			this.$emit('filterChange', item.filterObj)
			this.drawer = false
		},
		//立即过滤
		ok() {
			this.filterObjLength = this.filter.length
			this.$emit('filterChange', this.filterObj)
			this.drawer = false
		},
		//保存常用
		saveMy() {
			this.$prompt('常用过滤名称', '另存为常用', {
				inputPlaceholder: '请输入识别度较高的常用过滤名称',
				inputPattern: /\S/,
				inputErrorMessage: '名称不能为空'
			})
				.then(async ({ value }) => {
					this.saveLoading = true
					const saveObj = {
						title: value,
						filterObj: this.filterObj
					}
					try {
						var save = await config.saveMy(this.filterName, saveObj)
					} catch (error) {
						this.saveLoading = false
						console.log(error)
						return false
					}
					if (!save) {
						return false
					}

					this.myFilter.push(saveObj)
					this.$message.success(`${this.filterName} 保存常用成功`)
					this.saveLoading = false
				})
				.catch(() => {
					//
				})
		},
		//清空过滤
		clear() {
			this.filter = []
			this.filterObjLength = 0
			this.$emit('filterChange', this.filterObj)
		}
	}
}
</script>

<style scoped>
.tabs-label {
	padding: 0 20px;
}

.nodata {
	height: 46px;
	line-height: 46px;
	margin: 15px 0;
	border: 1px dashed #e6e6e6;
	color: #999;
	text-align: center;
	border-radius: 3px;
}

.sc-filter-main {
	padding: 20px;
	border-bottom: 1px solid #e6e6e6;
	background: #fff;
}
.sc-filter-main h2 {
	font-size: 12px;
	color: #999;
	font-weight: normal;
}
.sc-filter-main table {
	width: 100%;
	margin: 15px 0;
}
.sc-filter-main table td {
	padding: 5px 10px 5px 0;
}
.sc-filter-main table td:deep(.el-input .el-input__inner) {
	vertical-align: top;
}
.sc-filter-main table td .el-select {
	display: block;
}
.sc-filter-main table td .el-date-editor.el-input {
	display: block;
	width: 100%;
}
.sc-filter-main table td .del {
	background: #fff;
	color: #999;
	width: 32px;
	height: 32px;
	line-height: 32px;
	text-align: center;
	border-radius: 50%;
	font-size: 12px;
	cursor: pointer;
}
.sc-filter-main table td .del:hover {
	background: #f56c6c;
	color: #fff;
}

.root {
	display: flex;
	height: 100%;
	flex-direction: column;
}
.root:deep(.el-tabs__header) {
	margin: 0;
}
.root:deep(.el-tabs__content) {
	flex: 1;
	background: #f6f8f9;
}
.root:deep(.el-tabs__content) .el-tab-pane {
	overflow: auto;
	height: 100%;
}

.dark .root:deep(.el-tabs__content) {
	background: var(--el-bg-color-overlay);
}
.dark .sc-filter-main {
	background: var(--el-bg-color);
	border-color: var(--el-border-color-light);
}
.dark .sc-filter-main table td .del {
	background: none;
}
.dark .sc-filter-main table td .del:hover {
	background: #f56c6c;
}
.dark .nodata {
	border-color: var(--el-border-color-light);
}
</style>
